利用QT的场景-视图类来画坐标轴的一种方式-Using QT scene view classes to implement a method of drawing axes.

Qwt是基于Qt开发的第三方二维图形类库。网络上Qwt的资源比较少，这是楼主在Qt平台上面写的第一个Qwt例子。后续会继续上传有关Qwt的开发。-Qwt is based on the Qt graphics library developed by third Fanger Wei. Qwt resources on the network is relatively small, it is the landlord written in Qt platform above the firs

QCustomPlot 是一个超强超小巧的qt绘图类，非常漂亮，非常易用，只需要加入一个qcustomplot.h和qcustomplot.cpp文件即可使用，远比qwt方便和漂亮，可以自己使用两个源文件也可以自己编译成库文件，非常方便。-QCustomPlot is a super-ultra-compact qt drawing class, very beautiful, very easy to use, only need to add a qcustomplot.h and qcus

一些QT封装的常用功能类, 包含界面开发, IO, 多线程, 信号槽等.(Some common functional classes for QT packaging include interface development, IO, multithreading, signal grooves, and so on.)